[gairp]

i want to get pixel color from UIImage, compare if is black color, and i have such funtion for duing this..
i need only my color at (GamePlayer.playerFrame.origin.x,GamePlayer.player Frame.origin.y) pixel
and how can i get it?

-(BOOL) playerColidesWall
{
    BOOL result = NO;
    struct pixel* pixels = (struct pixel*) calloc(1, self.bounds.size.width * self.bounds.size.height * sizeof(struct pixel));
    if (pixels != nil)
    {
        // Create a new bitmap
        
        CGContextRef context = CGBitmapContextCreate(
                                                     (void*) pixels,
                                                     self.bounds.size.width,
                                                     self.bounds.size.height,
                                                     8,
                                                     self.bounds.size.width * 4,
                                                     CGImageGetColorSpace(currentLevelInfo.levelImage.CGImage),
                                                     kCGImageAlphaPremultipliedLast
                                                     );
        
        if (context != NULL)
        {            
            CGContextDrawImage(context, CGRectMake(0.0f, 0.0f, self.bounds.size.width, self.bounds.size.height), currentLevelInfo.levelImage.CGImage);

            struct pixel black = {0,0,0,0};
            if(![self equalPixels:&pixels[(int)(GamePlayer.playerFrame.origin.x*GamePlayer.playerFrame.origin.y)]:&black])
           {
               result = YES;
           }
            CGContextRelease(context);
        }
        
        free(pixels);
    }
    return result;
}

this is equalPixels function

-(BOOL) equalPixels:(struct pixel*) pix1 :(struct pixel*) pix2
{
    NSLog(@"pixelcolor(%d,%d,%d)",pix1->r,pix1->b,pix1->g);
    return (pix1->r==pix2->r && pix1->b==pix2->b && pix1->g==pix2->g); 
}
//and this is pixles struct
struct pixel {
    unsigned char r, g, b, a;
};

[gairp]

i want to get pixel color from UIImage, compare if is black color, and i have such funtion for duing this..
i need only my color at (GamePlayer.playerFrame.origin.x,GamePlayer.player Frame.origin.y) pixel
and how can i get it?

-(BOOL) playerColidesWall
{
    BOOL result = NO;
    struct pixel* pixels = (struct pixel*) calloc(1, self.bounds.size.width * self.bounds.size.height * sizeof(struct pixel));
    if (pixels != nil)
    {
        // Create a new bitmap
        
        CGContextRef context = CGBitmapContextCreate(
                                                     (void*) pixels,
                                                     self.bounds.size.width,
                                                     self.bounds.size.height,
                                                     8,
                                                     self.bounds.size.width * 4,
                                                     CGImageGetColorSpace(currentLevelInfo.levelImage.CGImage),
                                                     kCGImageAlphaPremultipliedLast
                                                     );
        
        if (context != NULL)
        {            
            CGContextDrawImage(context, CGRectMake(0.0f, 0.0f, self.bounds.size.width, self.bounds.size.height), currentLevelInfo.levelImage.CGImage);

            struct pixel black = {0,0,0,0};
            if(![self equalPixels:&pixels[(int)(GamePlayer.playerFrame.origin.x*GamePlayer.playerFrame.origin.y)]:&black])
           {
               result = YES;
           }
            CGContextRelease(context);
        }
        
        free(pixels);
    }
    return result;
}

this is equalPixels function

-(BOOL) equalPixels:(struct pixel*) pix1 :(struct pixel*) pix2
{
    NSLog(@"pixelcolor(%d,%d,%d)",pix1->r,pix1->b,pix1->g);
    return (pix1->r==pix2->r && pix1->b==pix2->b && pix1->g==pix2->g); 
}
//and this is pixles struct
struct pixel {
    unsigned char r, g, b, a;
};